Pith Number

pith:J3C4XCRY

pith:2021:J3C4XCRYGKIQ2G2IZDFNJ6CP47

not attested not anchored not stored refs pending

SPANN: Highly-efficient Billion-scale Approximate Nearest Neighbor Search

Bing Zhao, Chuanjie Liu, Haidong Wang, Jingdong Wang, Mao Yang, Mingqin Li, Qi Chen, Zengzhong Li

arxiv:2111.08566 v1 · 2021-11-05 · cs.DB · cs.AI · cs.CV · cs.IR · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J3C4XCRYGKIQ2G2IZDFNJ6CP47}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

2 papers in Pith

SIFT: Selective-Index For Fast Compute of RAG Prefill by Exploiting Attention Invariance

RACORN-1: Adaptive Recall-Preserving Speedup for Low-Selectivity Filtered Vector Search

Receipt and verification

First computed	2026-07-05T03:32:35.293404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ec5cb8a3832910d1b48c8cad4f84fe7e5177baf96f25bedea0c6deca7859f7b

Aliases

arxiv: 2111.08566 · arxiv_version: 2111.08566v1 · doi: 10.48550/arxiv.2111.08566 · pith_short_12: J3C4XCRYGKIQ · pith_short_16: J3C4XCRYGKIQ2G2I · pith_short_8: J3C4XCRY

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/J3C4XCRYGKIQ2G2IZDFNJ6CP47 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 4ec5cb8a3832910d1b48c8cad4f84fe7e5177baf96f25bedea0c6deca7859f7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a0fcf675ba8119220dd373d73b2ebd3037b545f777a802cb00dd231fc5344cf",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CV",
      "cs.IR",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2021-11-05T06:28:15Z",
    "title_canon_sha256": "e905346c46514b0e6518f1f60a4de944e4f0d76bdae4d0dc7e773075a0585adc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.08566",
    "kind": "arxiv",
    "version": 1
  }
}